jones



(No Model.)

J. SGHWARZMANN.

ROTARY ENGINE. No. 451,777. Patented May 5,1891.

WJZWZSSES. 4

/l/ g 6 "I 1' 1/1 7 NITED STATES JOHN SCHIVARZMANN, OF IVASI-IINGTON, DIST RICT OF COLUMBIA.

ROTARY EN G IN E- SPECIFICATION forming part of Letters Patent No. 451,777, dated May 5, 1891.

Application filed September 8, 1890. Serial No. 364,833. (No model.)

To all whom it may concern:

Be it known that 1, JOHN SOHWARZMANN, a subject of the Emperor of Germany, and a resident of Washington, in the District of Columbia, have invented certain new and useful Improvements in Rotary Engines; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to improvements in rotary steam-engines, the object being to provide such an engine which will possess superior advantages with respect to simplicity and economy in construction and efficiency in operation.

The invention consists in the novel construction and combination of parts hereinafter fully described, and specifically pointed out in the claim.

In the accompanying drawings, Figure 1 is a central longitudinal section of a steam-engine constructed in accordance with my invention. Fig. 2 is a cross-section of the same on the line a: :0, Fig. 1. Fig. 3 is a face view of the stationary disk. Fig. 4 is an inner face View of one of the rotating disks. Fig. 5 shows detail views of the steam-outlets in the stationary disk.

In the said drawings, the reference-n umeral 1 designates the casing of the engine, consisting of the heads 2 and the intermediate wall or rim 3. Through the center of this casing passes the driving shaft 4, which is supported by and journaled in the uprights 5, secured to the base 6. Securely fixed to this shaft are the driving-disks 7, having their innor faces provided with a series of grooves 8, the grooves of each series being arranged at an angle to the groove of each adjoining series, as seen in Fig. 3. These disks are placed face to face with an intermediate steam-disk 9, mounted upon an upright 10, secured to base 6. The driving shaft passes loosely through the center of disk 9, so that it may revolve freely therein. This disk is provided with a peripheral groove 12,aud on each face it is provided with a series of radial grooves 13, extending from the periphery to uearthe center. These grooves are beveled from their inner to their outer ends and communicate with the groove 12. The faces of the disk 9 from the inner to the outer ends of the grooves 13 are formed with a rectangular recess 14, in which is secured a plate 15,which projects over each of the grooves,but does not entirely close the same,leavinga slight space between its free edge and one side of each groove. An annular rim 16, provided with a steam-supply plpe 17, encircles the disk 9, the groove 12 thus forming a steam-chest. The casing at its upper portion is provided with a steam-outlet 18. I

It will be noted that the casing is much larger than the disk, so that there will be a space all around the disks, as seen in Fig. 2.

The operation is as follows: Steam being admitted to the groove in the periphery of the steam-disk by means of the supply-pipe will enter the grooves in each face of said disk and escape through the space between the free edges of the plates covering the grooves and the edges of said grooves. By beveling these grooves, as shown, the steam escapes in a line nearly parallel with the faces of the disk and impinges upon the grooves in the disks secured to the driving-shaft, thus causing said disks and shaft to be revolved. It will be noted that the steam and driving disks do not contact with each other, there being a slight space therebetween, through which the steam escapes to the interior of the easing after having performed its work and escaping from said casing through the outlet in the top thereof. The bottom of thecasing is provided with an outlet 19 for the escape of any water of condensation.

Having thus described my invention, what I claim is- In a rotary engine, the combination, with the casing having a steam-outlet therein, the driving-shaft, and the rotary disks secured to said shaft, having a series of grooves in their inner faces, the grooves of each series being placed at an angle to the grooves of each adjoining series, of the stationary disk intermediate of the rotating disks, having a peripheral groove and a rim provided with asteam- In testimony that I claim the foregoing as my own I have hereunto affixed my signature in presence of two witnesses.

JOI-IN SCIDVARZMANN.

Witnesses:

BENNETT S. J ONES, WM. F. FoLKs. 

